So....

SPOILER
.
.
.
.
.
.
.
.
.
.
.
.
.

She Cant at this moment. She stopped herself from have the ability to have kids just in case she was married off again to that asshole she married in her first life.

Sorry for the nope T.T She can't be pregnant but I'm sure she will be soon. But I don't thrust the maid...

spoiler
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
she didn't really do it for the purpose of not wanting to have a child. It's because when she was abandoned in the palace, she didn't know what menstruation was, and thought that she was ill and dying. so she ate medicinal herbs to stop the bleeding. when she woke up in her second life/chance?, it was already too late to reverse the effect of the medicine to her body.

Thats what she did in her first life. In her present life she did repeated the process for the reason the other person said, to not have the creepy dude's kid.

Ohhh....
Shit, that got dark fast!!!
Thank you guys for clearing it up for me!

I hope she will be able to have kids in the future... ╥﹏╥

We have to leave at least one thing unspoiled lmao(⌒▽⌒)